(0)C14C:0/0:
IPC6
SECTION C - CHEMISTRY; METALLURGY
CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g....
C14C
1/1

C 14 C

 CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING (dyeing or bleaching of leather or furs D 06)
 

Note
 

Processes using enzymes or micro-organisms in order to:
 

(i)

 liberate, separate or purify a pre-existing compound or composition, or to
 

(ii)

 treat textiles or clean solid surfaces of materials
 

are further classified in subclass C 12 S. [5]

 

 

 
 

 1
/ 00 Chemical treatment prior to tanning

1
/ 02 • Curing raw hides  

1
/ 04 • Soaking  

1
/ 06 • Facilitating unhairing, e.g. by painting, by liming  

1
/ 08 • Deliming; Bating; Pickling; Degreasing  
 

 3
/ 00 Tanning; Compositions for tanning

3
/ 02 • Chemical tanning  

3
/ 04 • • Mineral tanning  

3
/ 06 • • • using chromium compounds  

3
/ 08 • • by organic agents  

3
/ 10 • • • Vegetable tanning  

3
/ 12 • • • • using purified or modified vegetable tanning agents  

3
/ 14 • • • Fat tanning; Oil tanning  

3
/ 16 • • • using aliphatic aldehydes  

3
/ 18 • • • using polycondensation products or precursors thereof  

3
/ 20 • • • • sulfonated  

3
/ 22 • • • using polymerisation products  

3
/ 24 • • • using lignin derivatives, e.g. sulfate liquor  

3
/ 26 • • • using other organic substances, containing halogen  

3
/ 28 • • Multi-step processes  

3
/ 30 • • using physical means combined with chemical means  

3
/ 32 • Recovering tanning agents from leather  
 

 5
/ 00 Degreasing leather
 

 7
/ 00 Pasting processes (chemical part)
 

 9
/ 00 Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes

9
/ 02 • using fatty or oily materials, e.g. fat liquoring  

9
/ 04 • Fixing tanning agents in the leather  
 

 11
/ 00 Surface finishing of leather
 

 13
/ 00 Manufacture of special kinds of leather, e.g. vellum (chamois tanning C 14 C 3/14)

13
/ 02 • Manufacture of technical leather  
 

 15
/ 00 Apparatus for chemical treatment or washing of hides, skins, or leather